Определить период

...

How many working days in year 1993?

Here is the detail of the calculation:

Because 1993 is not a leap year, it has 365 days.

Let's remove 52 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 5 public holidays that do not fall during a weekend and we obtain 256 working days in 1993.

Here is the list of these 5 public holidays:

1. Jour de l'An : пятница, 1 январь, 1993
2. Vendredi Saint : пятница, 9 апрель, 1993
3. Jeudi de l'Ascension : четверг, 20 май, 1993
4. Fête-Dieu : четверг, 10 июнь, 1993
5. Toussaint : понедельник, 1 ноябрь, 1993

And here are the 4 public holidays falling on a weekend:

1. Saint-Berchtold : суббота, 2 январь, 1993
2. Fête nationale suisse : воскресенье, 1 август, 1993
3. Noël : суббота, 25 декабрь, 1993
4. Saint Étienne : воскресенье, 26 декабрь, 1993